<template>
  <div class="home-brand" ref="target">
    <HomePanel title="热门品牌" subTitle="国际经典 品质保证">
      <template v-slot:right>
        <a @click="toggle(-1)" :class="{ disabled: index === 0 }" href="javascript:;" class="iconfont icon-angle-left prev"></a>
        <a @click="toggle(1)" :class="{ disabled: index === 1 }" href="javascript:;" class="iconfont icon-angle-right next"></a>
      </template>
      <div class="box">
        <ul v-if="brand.length" class="list" :style="{ transform: `translateX(${- index * 1240}px)` }">
          <li v-for="item in brand" :key="item">
            <RouterLink to="/">
              <img :src="item.picture" alt="">
            </RouterLink>
          </li>
        </ul>
        <div v-else class="skeleton">
          <XtxSkeleton bg="#e4e4e4"  animated width="240px" height="305px" class="item" v-for="i in 5" :key="i" />
        </div>
      </div>
    </HomePanel>
  </div>
</template>

<script setup>
import HomePanel from './home-panel.vue'
import { findBrand } from '@/api/home'
import { ref } from 'vue'
import { useLazyData } from '@/hooks'

// 懒加载热门品牌数据
const { target, result: brand } = useLazyData(() => findBrand(10))

// 切换效果 索引 (只有0 - 1)
const index = ref(0)

// 切页函数
const toggle = (step) => {
  const newIndex = index.value + step
  if (newIndex < 0 || newIndex > 1) return
  index.value = newIndex
}

</script>

<style lang="scss" scoped>
.home-panel {
  background:#f5f5f5
}
.iconfont {
  width: 20px;
  height: 20px;
  background: #ccc;
  color: #fff;
  display: inline-block;
  text-align: center;
  margin-left: 5px;
  background: $xtxColor;
  &::before {
    font-size: 12px;
    position: relative;
    top: -2px
  }
  &.disabled {
    background: #ccc;
    cursor: not-allowed;
  }
}
.box {
  display: flex;
  width: 100%;
  height: 345px;
  overflow: hidden;
  padding-bottom: 40px;
  .list {
    width: 200%;
    display: flex;
    transition: all 1s;
    li {
      margin-right: 10px;
      width: 240px;
      &:nth-child(5n) {
        margin-right: 0;
      }
      img {
        width: 240px;
        height: 305px;
      }
    }
  }
}
  .skeleton {
    width: 100%;
    display: flex;
    .item {
      margin-right: 10px;
      &:nth-child(5n) {
        margin-right: 0;
      }
    }
  }
</style>
